mm: introduce debug_kmap_atomic

[linux-2.6.git] / include / linux / highmem.h

diff --git a/include/linux/highmem.h b/include/linux/highmem.h
index 13875ce..7ff5c55 100644 (file)
--- a/include/linux/highmem.h
+++ b/include/linux/highmem.h
@@ -187,4 +187,16 @@ static inline void copy_highpage(struct page *to, struct page *from)
        kunmap_atomic(vto, KM_USER1);
 }
 
+#if defined(CONFIG_DEBUG_HIGHMEM) && defined(CONFIG_TRACE_IRQFLAGS_SUPPORT)
+
+void debug_kmap_atomic(enum km_type type);
+
+#else
+
+static inline void debug_kmap_atomic(enum km_type type)
+{
+}
+
+#endif
+
 #endif /* _LINUX_HIGHMEM_H */